Patents by Inventor Yasutosi Kada

Yasutosi Kada has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for finishing grooved articles
    Patent number: 5174001
    Abstract: Grooves in an article such as a commutator are filled with a soft brittle material before a grooved surface of the article is cut. With the grooves thus filled, the cutting is performed continuously and smoothly without involving formation of burrs projecting into the groove. The soft brittle material includes a water soluble material which can easily be removed from the grooves by merely immersing the article in water. Preferably, the soft brittle material comprises a sublimable material which is self-vanishing or disappearing as it undergoes sublimation to the vapor state when it is left to stand in the atmosphere.
    Type: Grant
    Filed: October 24, 1990
    Date of Patent: December 29, 1992
    Assignees: Nippondenso Co., Ltd., Asmo Co., Ltd.
    Inventors: Yoshimichi Shirai, Hiromitu Ibe, Yasutosi Kada, Kazushi Sugishima
  • Method and apparatus for finishing grooved articles
    Patent number: 4862575
    Abstract: Grooves in an article such as a commutator are filled with a soft brittle material before a grooved surface of the article is cut. With the grooves thus filled, the cutting is performed continuously and smoothly without involving formation of burrs projecting into the groove. The soft brittle material includes a water soluble material which can easily be removed from the grooves by merely immersing the article in water. Preferably, the soft brittle material comprises a sublimable material which is self-vanishing or disappearing as it undergoes sublimation to the vapor state when it is left to stand in the atmosphere.
    Type: Grant
    Filed: April 20, 1988
    Date of Patent: September 5, 1989
    Assignees: Nippon Denso Co., Ltd., Asmo Co., Ltd.
    Inventors: Yoshimichi Shirai, Hiromitu Ibe, Yasutosi Kada, Kazushi Sugishima